// Copyright 2021 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import SwiftUI
import Firebase
import FirebaseCombineSwift
import Combine

struct AnonymousSignInView: View {
  @StateObject var viewModel = AnonymousSignInViewModel()

  var body: some View {
    Form {
      UserInfoView(viewModel: viewModel)
      Section(header: Text("Sign in anonymously")) {
        Button(action: viewModel.signIn) {
          Text("Sign in")
        }
        .disabled(viewModel.isSignedIn)

        Button(action: viewModel.signOut) {
          Text("Sign out")
        }
        .disabled(!viewModel.isSignedIn)
      }
    }
    .navigationTitle("Anonymous Auth")
  }
}

struct AnonymousSignInView_Previews: PreviewProvider {
  static var previews: some View {
    AnonymousSignInView()
  }
}
